Weighted Sparse Simplex Representation:A Unified Framework for Subspace Clustering, Constrained Clustering, and Active Learning

Peng, Hankui and Pavlidis, Nicos (2022) Weighted Sparse Simplex Representation:A Unified Framework for Subspace Clustering, Constrained Clustering, and Active Learning. Data Mining and Knowledge Discovery. ISSN 1384-5810

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Abstract

Spectral-based subspace clustering methods have proved successful in many challenging applications such as gene sequencing, image recognition, and motion segmentation. In this work, we first propose a novel spectral-based subspace clustering algorithm that seeks to represent each point as a sparse convex combination of a few nearby points. We then extend the algorithm to a constrained clustering and active learning framework. Our motivation for developing such a framework stems from the fact that typically either a small amount of labelled data are available in advance; or it is possible to label some points at a cost. The latter scenario is typically encountered in the process of validating a cluster assignment. Extensive experiments on simulated and real datasets show that the proposed approach is effective and competitive with state-of-the-art methods.

Item Type:
Journal Article
Journal or Publication Title:
Data Mining and Knowledge Discovery
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1700/1706
Subjects:
ID Code:
164623
Deposited By:
Deposited On:
14 Jan 2022 12:25
Refereed?:
Yes
Published?:
Published
Last Modified:
15 May 2022 02:21